I use Fitday, every day. It becomes pretty easy and takes very little time, especially after you start to trim back much of what you eat.

I would suggest that you be a bit skeptical of the calories burned figures the sites generate, at least on Fitday. It gives very optimistic figures leading one to think, oh boy, I get to eat even more.

The real plus for me using Fitday, was tracking the nutritional/RDA aspects of my food intake. It was a real eye opener for me for I thought I was a pretty healthy eater already. I learned I could be a lot better.